Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AB1NM callsign genealogy
Currently held by Thombs, Michael
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by AB1NM's current licensee, walking backwards.
- Thombs, MichaelRIgranted 2010-06-08cancelled 2010-08-03
Successor callsigns
Callsigns held now by people who previously held AB1NM.
- Thombs, MichaelFLgranted 2022-02-03